.theme
  background-color var(--bg-color)
  color var(--text-content-color)
  height 100vh
  position relative
  z-index 1

  &:before
    background-image linear-gradient(180deg, var(--theme-bg-white), var(--bg-color))
    content ''
    display block
    height 400rpx
    position absolute
    width 100%
    z-index -1

  &--bg-white
    background-color var(--theme-bg-white)
